请教计算角锥吸波材料的反射系数

我是新手，最近要计算角锥吸波材料的反射系数，看了资料试了试，做好模型之后就不知道该怎么继续了。
我做了四块角锥放置在一起。看了站内有关的帖子（byron 2008如何计算材料的反射率和透射率），看不太懂。而且
他是计算平板材料。那位大牛能帮忙提供一个浅显的思路和方法，拜托了

模仿这个例子...
Antenna coupling using a point source and ideal receiving antenna
Keywords: coupling, S-parameters, radiation pattern point source, ideal receiving
antenna
This example demonstrates the computation of coupling between two horn antennas using
the Radiation pattern point source approximation and the Ideal receiving antenna.
The geometry consists of two horn antennas, separated by a distance of 60 wavelengths,
that point towards one another. Exactly half way between the antennas is a metallic
plate effectively blocking the line–of–sight coupling between the antennas.

太感谢您了，刚找到那个例子，先试试看。不过本人水平太浅了，有困难的话，可能还会再请教的，还望继续赐教